package cn.magicduck.demo;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @author 神奇的鸭鸭
 * @description
 * @date 2020/8/1415:31
 */
public class Singleton_00 {
    public static Map<String,String> cache = new ConcurrentHashMap<String, String>();
}
